Machine for punching metal



(No Model.) 3 Sheets-Sheet 1.

S. I. SNYDER.

MACHINE FOR PUNGHING METAL.

N0. 363,917. I PatentedMayBl, 1887.

WITNESSES N. PETERS, Phnflo-Lilhogmpllcr, Wlslli nnnnnn C.

3 Sheets---Sheet 3.

(No Model.) 7

, S. I. SNYDER. MAGHINEFOR PUNOHING METAL. No. 363,917. Patented May 31, 1887.

WITNESSES n 4 7A ///////////Z M N. PETERS. PholwLlllwgmpher. Washington. nv

UNITED STATES P TE T OFFicE.

SAMUEL I. SNYDER, OF OLEARFIELD, PENNSYLVANIA.

MACHINE FOR PU NCHING METAL.

SPECIFICATION forming part 01' Letters Patent No. 363,917, dated May 31, 1887.

Application filed February- 15. 1887. Serial No. 927,675.

(No model.)

field, in the county of Glearfield and State of' v 5 Pennsylvania, have invented certain new and useful Improvements in Machines for Punching and Gaging' Mainsprings and other Articles, of which the following is a full, clear, and exact description.

The primary object of this invention is to provide a machine for watch-makers use in punching and gaging springs; but the principles involved in the construction of my ma-' chine adapt it for use for many analogous pur- 5 poses. However, for simplicitys sake, ,I will describe my invention in this specification as a watch-makers tool.

The invention, stated in very general terms,

consists in two holding-jaws moved synchronously and equally to center the spring to be punched over a die and under a punch, and to hold it while being punched and strip it from the receding punch; also, in gages for ascertainingthethickness andwidth ofsprings,

all as I will now proceed to more particularly set forth and claim.

In the accompanying drawings, in the several figures of which like parts are similarly designated, Figure 1 is a perspective view;

Fig. 2, a vertical longitudinal section with some parts in elevation; .Fig. 3, a horizontal section above the work-table, with the width gagein position; Fig. 4., a vertical cross-section of the arm and worl :table.

provided with a series of matrices, h h h h, and each of these matrices is centered, as desired, beneath the punch,and held there by a go pin, i, engaging one of a series of holes or sockets, i, in the side of the die, the pin 2' he- Fig. 5 shows' several forms of punches. Fig. 6 is a pering arranged in the work-table. Grossways j are made in the worktable at right angles to the wayy, and'in these ways are arranged the work-centeri ng jaws 7c is. These jaws are provided wit-h nuts in It on their under sides,

threads, and engaged by right-and-left hand screw-rod I, having an operating-head Z. These jaws have t-ruly-squartnl adiac it faces at m, by wh ic h the work is grasped and rmly held while being'punehed when the jaws are caused to approach one another by the rota tion of the screw 2, and the upper edges of these faces are provided with the overhanging lips m m", which prevent the work from buckling, and also strip it from the receding punch.

The punches f are fitted in a socket, e, in the punch-stock c, and secured against dis placement by endwise or rotary movement by set-screw, e", )assed into the stock and engag' ing a socket, f, in the punch. These punches may be provided with anysuitable device to serve as a guide in properly setting them in the punch-stock, and I have shown for this punch-stock.

round openings to cooperate with, corresponding punches, f, shown in side and front view at l and 2 of Fig. 5. The matrix h may be rectangular to co-operate with the punch f, (shown in side view at 3 in Fig. 5,) and the matrix If may be semicircular or elliptical to cooperatewith the punch f, (shown in side view at 4 in Fig. 5,) all to correspond with usual holes made in mainsprings of watches for use in securing them in place, while the matrix h" cooperates with the punch f, (shownin side and bottom view in Fig. 5,) to form a tongue on a mainspring for use in applying it, as shown in Fig. 7; and, so far as I am aware, no watch-makers tool has heretofore been produced for enabling a repairing jeweler to make this tongue, the springs so constructed coming to the jewcler t'rom the manufacturer, and the jeweler is thus compelled to keep a stock of machine he can provide any spring with such a tongue; but the shape of the matrices and punches will be limited only by thekind or sizes of this kind of spring, whereas with my having, respectively, left and right hand any suitable devicesuch, for example, as a M purposea pin, f", to engage a notch in the v The matrices h h may be various sizes of character of the work for which the machine is designed.

The punch-stock e is arranged to be reciprocated vertically in the head d, and I give it a 5 positive motion in both directions by a handlever, n, fulcrumed on a pin, a, in the head (I.

This lever has a fiat head, a, in the opposite I sides of which eccentric grooves n are formed,

which engage pins or lugs (see Fig. 4' and r0 dotted lines, Fig. 2) on cars projecting vertically from the sides of the punch-stock. The

lugs 6 may be introduced into the grooves a through the opening a in the lever-head. The

head n" of the lever n is in ettect a cam, and its perimeter bears upon the head of thepunchstock in depressing saidstock,whileits grooves engage the lugs on the ears of the punch-stock to effect an equally positive retracting movement of the punchstock.

The gage for ascertaining the thickness of the work is constructed as follows: A slot, 0, is made in the head (I of the arm I), and at its bottom and flush therewith is fixed in the head a pin, 0. Another pin, 0 is fastened to and 2 moves with the punch-stock e, and this pin 0 is parallel with the pin 0. By movement of the punch-stock the pin 0 is moved toward and from the pin 0, and their range of movement is made to conform to any arbitrary scale in use by jewelers or spring-makers and others. The movements of the pin 0 and its distance from the pin 0, and hence the thickness of any piece of material grasped between these pins, is indicated 011 the graduated pin 1), arranged in a socket, q, in the arm I), and depressed by the handle at coincidently with the descent of the pin 0 This graduated pin may be secured in the socket in arm I) bya pimp, in the arm engaging a longitudinal slot, 1), in the pin; 40 and in order to keep the said graduated pin in operative positiouit is supported upon a spring, 1f, dropped in the bottom of the socket q, and oil proper strength to graduate the descent of the pin 1).

The gage for width, (shown in detail in Fig. 6,) consists of a plate, r, having Dennisons or other scale marked thereon, and having a straight-edge, r, to fit against the jaws k k, any suitable device being employed to firmly 5o secure the gage to the work-table inthis position. The plate is provided with a worksight, 0', and it is also provided with a vertical arbor, 1-, having rigidly aflixcd thereto a pinion, s, which, when the gageis in position, (see Fig. 3,) meshes with a toothed rack, t, on

the jaw It, so that as the jaw is moved longitudinall y the pinion will be rotated. The arbor i is provided with a pointer, 8, having afinger,

3, projecting through a slot, 0 in the gage- 63 plate and movable over the scale on said plate. This pointeris kept normally at zero by ahairspring, 8, or other suitable device. Now, it is obvious that when the parts arein the position of Fig. 3, if a spring or other piece of work 65 the width of which it is desired to ascertain be placed between the jaws k and la and said jaws be caused to approach the said work, the pinion will be rotated until the jaws come in contact with the work, and the pointer will traverse the scale and indicate the gage or width of the work on said scale. The sight 7' admits of the punching of the work while the gage is in place; or, in other words, the gage used need not be removed to effect the other operations of the machine.

I have shown the plate only partly graduated, but it will be understood that it will he graduated in any desired manner to obtain the desired result.

An opening, '0, may be made in the worktable to permit the escape of waste material.

The head (I may be recessed from front to rear to receive the head of the handle n.

What I claim is- 1. A work-table provided with right-angle ways intersecting beneath a punch-stock and in line therewith, combined with a die having one or more matrices, and work-centering jaws arranged in said ways, and a punch-stock and punch, substantially as described.

2. A die, jaws, and means, substantially as described, to cause said jaws to approach and decode with respect to one another over said die to center the work, and lips on said jaws overhanging the work to prevent it from rising out of said jaws, combined with the punch. and punch stock, and a lever connected to said punch-stock to operate it positively in both directions,substantially as described.

3. Amachineiorpunchingtonguesin watehsprings, comprising a die having an elongated matrix of substantially the shape of the tongue to be formed, jaws for centering the spring and holding it over said matrix, and a punch having an active face corresponding with the matrix and cooperating therewith, and a punch-stock to receive said punch, and means for operating such punchst-oek, substantially as described.

4. An arm, I), a head thereon provided will a slot, 0, and a pin,-0', a punch-stoek having a pin, 0", parallel with the first-named pin,

and an indicator, 1), combined with the operating-handle of the punch-stock, whereby the thickness of the materials may be gaged, substantiall y as described.

5. The work-centering j aws movable toward and from one another, provided witha toothed rack, combined with a gage-plate having a pointer and a pinion on the pointer shaft or arbor meshing with the toothed rack on the work-centering jaw, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand this 14th day of February, A. D. 1887.

SAML. I. SNYDER.

'VVitnesses:

J. BOYNTON NEVLING, CURTIN NEVLING. 

